Chiral Selectivity of Porphyrin–ZnO Nanoparticle Conjugates

• DOI: 10.1021/acsami.8b22749
• Publication Date: 2019-03-05T19:34:50Z
• Authors: Manuela Stefanelli; Gabriele Magna; Francesca Zurlo; Federica M. Caso; Elisabetta Di Bar...; Simonetta Antonaroli; Mariano Venanzi; Roberto Paolesse; Corrado Di Natale; Donato Monti
• Keywords: Chirality; Supramolecular chirality

Recognition of enantiomers is one the most arduous challenges in chemical sensor development. Although several chiral systems exist, their effective exploitation as sensitive layer sensors hampered by practical implications that hinder stereoselective recognition solid state. In this paper, we report a new methodology to efficiently prepare films, using hybrid material approach where porphyrin derivatives are grafted onto zinc oxide nanoparticles. Circular dichroism (CD) evidences solid-state film retains supramolecular chirality due interactions, besides an additional CD feature correspondence absorbance ZnO (375 nm), suggesting induction underlying The capability detect and recognize vapors enantiomer pairs was evaluated fabricating gas based on quartz microbalances. Chiral films its own were used for comparison. functionalized nanostructures presented remarkable stereoselectivity limonene enantiomers, whose ability intercalate layers makes terpene optimal probe. chiroptical properties confirm use porphyrin-capped viable route formation selective surfaces.